When Gaila calls for the lights and asks if Kirk doesn't love her, too, Kirk sits back and says, "No, I meant..." -- correcting her, as though he was meaning something else completely. Then Uhura interrupts them.

He's not talking about what she said.

He's looking for a way out of the foot-in-mouth situation he's landed himself in.

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If we don't get off this planet we'll all die here.